Calcite, Dolomite, Biotite
Schlegeis tunnel, Finkenberg, Schwaz District, Tyrol, Austria
This piece shows a typical combination from this locality.
Grey translucent scalenohedral calcite , white intergrown dolomite crystals, both nicely set upon black biotite crystals. Matrix is gneis.
Found in the late 1960s, during the building phase of the hydro-electric power plant. 8 x 7 x 3 cm, aproxx.